per-tracker 404 templating Currently if CGI can't map a name it raises NotFound which gets propagated up to roundup-server which generates a plain vanilla 404 page. This changes it so that the CGI client tries to handle NotFound itself by rendering the appropriate template: classname.404.html (or _generic.404.html if no class specific one is found). If the URL can't be mapped to a DB class then we just reraise NotFound and let the upper layer take care of it. Also, add some basic templates for it. They aren't pretty but no worse than what you got before and provide a jumping off point for further customization. This should fix [SF#403287].